10537356421 has 4 divisors (see below), whose sum is σ = 10547214700. Its totient is φ = 10527498144.

The previous prime is 10537356419. The next prime is 10537356463. The reversal of 10537356421 is 12465373501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5092392321 + 5444964100 = 71361^2 + 73790^2 .

It is a cyclic number.

It is not a de Polignac number, because 10537356421 - 2¹ = 10537356419 is a prime.

It is a super-2 number, since 2×10537356421² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10537356121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4927536 + ... + 4929673.

It is an arithmetic number, because the mean of its divisors is an integer number (2636803675).

Almost surely, 2^10537356421 is an apocalyptic number.

It is an amenable number.

10537356421 is a deficient number, since it is larger than the sum of its proper divisors (9858279).

10537356421 is an equidigital number, since it uses as much as digits as its factorization.

10537356421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9858278.

The product of its (nonzero) digits is 75600, while the sum is 37.

The spelling of 10537356421 in words is "ten billion, five hundred thirty-seven million, three hundred fifty-six thousand, four hundred twenty-one".